Structural Steel Prof Awad S Hanna Type of

Structural Steel Prof Awad S. Hanna

Type of Steel C Designated by the letter “A” followed by the American Society for Testing and Materials (ASTM) designation number. The principal types of structural steel include: ^A 36 carbon structural steel ^A 572 high-strength low-alloy structural steel ^A 588 corrosion-resistant high-strength low-alloy structural steel. Prof Awad S. Hanna

Table 1, Rolled-steel shape designations 1” Weight: 40. 8 lb/sq. ft/ in 1’ 1’ Prof Awad S. Hanna

Steel Sections: Channel C 8 x 11 C = channel 8 = nominal depth weight = 11. 5 #/Lf Use: C beams and built-up members Prof Awad S. Hanna

Steel Sections: Angle L 5 x 3 x 5/8 L = angle 5 3 5/8 = length of one leg = length of another leg = nominal thickness need to look up # C Bracing and build-up members Prof Awad S. Hanna

Structural WT 7 x 49. 5 ST 9 x 35 WT = cut from wide flange (14 x 90) 7 = nominal depth 49. 5 = #/lf ST = cut form S beam (18 x 70) Use: C Build-up sections Prof Awad S. Hanna

Wide Flange W 14 x 90 14 WF 90 Standa rd Beam S 18 x 70 18 I 70 W = wide flange 14 = nominal depth 90 = #/lf use: beam and column S = standard 18 = nominal depth 70 = #/lf use: beam, not column Prof Awad S. Hanna

Estimating Tips C Nominally taken off and priced by weight C Group for take off by: ^Grade of steel ^Type of section or member ^Method of tied connection ^location C Maintain consistent sequence of take off. Common: ^Columns and detail ^Beams and detail (floor by floor) ^Bracing and flooring Prof Awad S. Hanna

Pricing C Depends on where material is purchased. ^Mill price apply to large orders. ^Warehouse price apply to small orders from local supplier. C Prices are as of time of delivery. Need escalation clauses to be clearly set forth. C Price is made up a base plus extras. Prof Awad S. Hanna

Pricing Structural C Prices are expressed in cents per pound. Shapes C W 14 x 95 - 32. 68 ft, A 36 steel (3104. 6#) ^Base ^Dimension: shape length-quantity ^Pack ^Mark ^Load Prof Awad S. Hanna 17. 00 0. 45 1. 00 0. 20 18. 65

Example Drawing for Structural Steel Take-Off All Columns W 14 x 68 30’ 0” Prof Awad S. Hanna W 14 x 43 W 14 x 84 W 18 x 50 W 18 x 70 W 14 x 103 28’ 0” W 14 x 43 W 14 x 43 20’ 0” W 18 x 40 W 14 x 43 W 18 x 70 W 14 x 84 W 18 x 40 NOTE: All columns are 12’ 0” in length this Row W 24 x 68 W 14 x 43 W 14 x 84 W 18 x 70 W 14 x 84 14’ 0” W 14 x 43 W 18 x 50 W 14 x 43 W 14 x 84 W 18 x 70 W 14 x 84 14’ 0” W 14 x 43” W 18 x 40 W 14 x 68 W 14 x 103 W 14 x 68 W 14 x 84 28’ 0” W 14 x 43 W 14 x 43 20’ 0” All Columns this Row W 24 x 100 N All Columns this Row W 24 x 68

Table 2, List of Steel Quantities C The cost of plates and connectors (bolts or welding) are not included. Prof Awad S. Hanna